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J. H. KLEINFELDER & ASSOCIATES <br /> File No. S-1008-35 <br /> May 17, 1985 <br /> Page 8 <br /> drilling equipment and MX diameter coring equipment. The test borings were drilled under <br /> the direction of our field engineer who assisted in extracting relatively undisturbed samples <br /> of the materials encountered and maintained a continuous log of the materials. Samples <br /> were obtained by driving either a 2-inch diameter modified Porter sampler or standard <br /> penetration sampler into the materials using a 140-pound hammer falling 30 inches ±. The <br /> number of blows required to advance the sampler are noted on the Logs of Borings, Plates VI <br /> through M, at the corresponding sample locations. Attempts to use MX diameter coring <br /> equipment were made in Barings 1 and 3, however, the material was not sufficiently <br />_ cemented and poor recovery was noted. <br /> Borings 2 and 5 were drilled through the existing landfill. Before extracting the <br /> drilling equipment, concrete was placed inside the hollow stem augers and the augers were <br /> gradually withdrawn. The amount of concrete backfill is noted on each boring. The <br /> remaining test holes, Borings 1, 3, 4, and 6, were left open and covered for possible <br /> reuse in a monitoring Program <br /> SOIL CONDITIONS <br /> _ In general, the soils encountered in Borings 1, 3, 4, and 6 consisted of grey-tan <br /> to dark brown cemented sandy silt and clay soils with varied layers of gravel. The soils are <br /> very hard and extend to the maximum depths explored. In Borings 2 and 5, approximately <br /> 47 and 65 feet, respectively, of garbage was encountered overlying the cemented sand, silt, <br /> and clay soils. <br /> A more detailed description of the materials encountered in the test borings are noted <br /> on the Logs of Borings. All soils have been classified according to the Unified Soil <br /> Classification System, which is described on Plate V. <br /> EF <br /> � <br />